Yes, you need to leave your habits and play with your pen-sets. I know setting up the pen-sets again sounds like a lot of work, but not really. He suggests a new system to manage your documentation. I also think it's a very good approach. Here, you can read from his own words:

"Each material type has pen numbers assigned to it. So all concrete has a
designated foreground and background pen number. Same with wood, metal,
insulation, etc. This logic of material type (not ArchiCAD element
type) having corresponding pen numbers allows two things. The first,
which we’ll talk about another time, is to change any fill pattern
between empty, solid, and a specific vectorial hatch. The second is to
switch between specific colors and black and white. Most of us have been
using a variant of this trick since ArchiCAD 10: drafting in color, but
having a printing Pen Set that is mostly black and white. It’s easy to
make the mental leap to a Pen Set that allows you to produce quality
black and white details, and also toggle on colors for increased
legibility when necessary. This is not an either/or proposition. I think
it’s important to develop your details to function in both color and
black and white."